OPUS - Ultrasonic extinction sensor for particle characterisation in highly concentrated suspensions and emulsions for process or laboratory application from below 0.1 µm to 3,000 µm
Ultrasonic extinction sensor for particle characterisation in highly concentrated suspensions and emulsions for process or laboratory application from below 0.1 µm to 3,000 µm
Liquid dispersions with a high concentration of solid particles or droplets, often totally opaque, are typically found in production processes. Optical analysers would require a high degree of dilution. Dilution not only causes an extensive preparation effort but changes the original state of dispersion. Ultrasonic extinction provides an outstanding performance for particle size analysis of suspensions and emulsions. One of the major benefits of ultrasonic extinction is the ability to operate in highly concentrated mediums, which typically come along with wet process stages. A solid content between 5 and 50 % by volume is the typical range of concentration. These are perfect conditions for OPUS, which may even be applied at concentrations up to 70 % by volume – typical for paste‐like particulate systems.
Using sound waves instead of light waves, suspension or emulsion analysis is independent of transparency. It may be conducted in totally opaque disperse matter like water droplets in crude oil, ore slurries or even carbon particles in liquid pitch. Paints, sugar pastes or pharmaceutical suspension also belong to the regular field of application.
Ultrasonic extinction allows a rugged and robust probe design that resists typical process conditions such as high temperatures, pressures or aggressive media and abrasive materials. An ATEX compliant OPUS version is available for applications in hazardous atmospheres.
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